CN112757025B

CN112757025B - Multi-head power device of machine tool

Info

Publication number: CN112757025B
Application number: CN202110113996.7A
Authority: CN
Inventors: 盛建强; 罗杨; 盛功涵; 罗遇凡; 程行聪
Original assignee: Yuhuan Twoyounger Electric Co ltd
Current assignee: Yuhuan Twoyounger Electric Co ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2022-02-11
Anticipated expiration: 2041-01-27
Also published as: CN112757025A

Abstract

The utility model relates to a lathe bull power device relates to the field of lathe, include the base, rotate and set up in the carousel of base, be fixed with the swivel mount on the carousel, be equipped with on the base and order about carousel pivoted motor one, it is provided with the blade holder to rotate on the swivel mount, the blade holder is equipped with two at least along swivel mount circumference, the blade holder is used for installing the cutter, the base is equipped with motor two, motor two's output shaft is connected with the blade holder and is used for ordering about the blade holder and rotates, the swivel mount is fixed with the brake disc, the axis of brake disc and the coincidence of transposable axis of rotation, the base is equipped with the hydraulic pressure calliper that is used for pressing from both sides tight brake disc. Through the multi-head power device of the machine tool, the rotating seat is not easy to deflect at an angle even being subjected to counter force and vibration during processing, and the safety is improved; the height of the rotary seat can be adjusted, so that the tool apron can be conveniently aligned to the processing position of the workpiece. Through setting up a plurality of blade holders, can process a plurality of positions of work piece simultaneously, improve efficiency.

Description

Multi-head power device of machine tool

Technical Field

The application relates to the field of machine tools, in particular to a multi-head power device of a machine tool.

Background

The power device is an important part of the machine tool and is used for outputting torque to drive the cutter to rotate, and the cutter further processes a workpiece.

The utility model discloses an application number is 202120019128.8's chinese utility model patent discloses an indexing rotary disk, adopts servo motor drive worm to rotate, the worm orders about the worm wheel and rotates, and the worm wheel drives carousel pivoted mode and operates, is fixed with the mount pad on the carousel, is equipped with two at least cutter holes on the mount pad, is used for installation cutter and unit head in the cutter hole, orders about the cutter by the unit head and rotates. The indexing turntable realizes tool changing through the operation of a motor.

Aiming at the related technologies, the inventor thinks that after the motor drives the turntable to rotate to complete tool changing, when the tool rotates to process a workpiece, the reaction force and vibration of the tool are large, and when the braking force of the servo motor is insufficient, the turntable is easy to deflect, so that potential safety hazards exist.

Disclosure of Invention

In order to reduce the possibility of the deflection angle of the rotary table during processing and improve the safety, the application provides a multi-head power device of a machine tool.

The application provides a lathe bull power device adopts following technical scheme:

the utility model provides a lathe bull power device, includes the base, rotates and sets up in the carousel of base, be fixed with the swivel mount on the carousel, be equipped with on the base and order about carousel pivoted motor one, it is provided with the blade holder to rotate on the swivel mount, the blade holder is equipped with two at least along the transposable circumference, the blade holder is used for installing the cutter, the base is equipped with motor two, motor two's output shaft is connected with the blade holder and is used for ordering about the blade holder and rotates, the swivel mount is fixed with the brake disc, the axis and the transposable axis of rotation coincidence of brake disc, the base is equipped with the hydraulic pressure calliper that is used for pressing from both sides tight brake disc.

By adopting the technical scheme, the angle of the rotary seat can be adjusted through the first motor, and the cutter seat facing the workpiece is switched; after the cutter is installed in the cutter holder, the cutter holder and the cutter are driven to rotate through the second motor, and the workpiece is machined in a workpiece moving mode. When the hydraulic calipers release the brake disc, the rotary seat can be driven to rotate by the first motor; after the tool changing is completed by rotating the motor, the hydraulic calipers clamp the brake disc, so that the rotary seat and the base cannot rotate relatively, the force is far greater than the braking force of the motor, and the rotary seat is not easy to deflect at an angle even if being subjected to counter force and vibration during processing, and the safety is improved.

Optionally, the rotation axis of the second motor coincides with the rotation axis of the rotating base, the second motor and the rotating base are fixedly connected through a sleeve, and an output shaft of the second motor penetrates through the sleeve; the outer wall of the sleeve is rotatably connected with the base through a bearing.

Through adopting above-mentioned technical scheme, the both ends of swivel mount all have rotation support piece, make the swivel mount rotation stability, and the swivel mount receives after the counter-force from the cutter, and the base is also more stable to the support of swivel mount.

Optionally, a main shaft is rotatably arranged in the rotating seat and driven to rotate by a second motor, a driving bevel gear is coaxially fixed on the main shaft, a driven bevel gear is coaxially fixed on the tool apron and meshed with the driving bevel gear.

Through adopting above-mentioned technical scheme, when the main shaft rotated, the blade holder was driven to rotate through the meshing effect of initiative bevel gear, driven bevel gear, and the blade holder drives the cutter and rotates in order to process the work piece.

Optionally, the tool apron is provided with a plurality of tool holders along the axial direction of the main shaft, the driving bevel gears are also provided with a plurality of tool holders along the axial direction of the main shaft, and the driven bevel gears located at the same position in the axial direction of the main shaft are meshed with the driving bevel gear located at the position in the axial direction of the main shaft.

By adopting the technical scheme, all the cutter holders of the spindle in the axial direction and the circumferential direction can be synchronously rotated by arranging the plurality of driving bevel gears; the axial of main shaft is equipped with a plurality of blade holders, can process the multiple position of work piece simultaneously, raises the efficiency.

Optionally, still include the frame, the base slides and sets up in the frame, the slip direction of base is parallel with the axis of rotation of swivel mount, the frame is equipped with motor three, by three drive pivoted lead screws of motor, the axis of rotation of lead screw is parallel with the slip direction of base, the base is fixed with the spiral shell seat, the lead screw pass the spiral shell seat and with spiral shell seat threaded connection.

Through adopting above-mentioned technical scheme, the lead screw is ordered about during the three operations of motor and is rotated, through threaded connection effect between lead screw, spiral shell seat, makes the spiral shell seat slide along the length direction of lead screw length, and the spiral shell seat drives whole base and slides along vertical direction. The height of the base and the height of the rotary seat can be adjusted through the third motor, so that the relative height position of the tool apron and the workpiece is adjusted.

Optionally, be equipped with the runner in the swivel mount, the swivel mount outer wall is equipped with inlet, the liquid outlet of intercommunication runner, inlet, liquid outlet correspond with the blade holder of swivel mount circumference same position, liquid outlet department is equipped with first shower nozzle, first shower nozzle one-to-one is in the blade holder of swivel mount circumference same position, first shower nozzle is used for carrying out the hydrojet cooling to the cutter.

By adopting the technical scheme, the cutting fluid is sent into the liquid inlet by the water pump and then sprayed out through the flow channel and the first spray head to cool the cutter in processing.

Optionally, no first nozzle is arranged between the tool holders distributed along the circumferential direction of the rotating seat.

By adopting the technical scheme, after the machine is shut down, because only one side of the cutter holder is provided with the first spray head, the first spray head is not easy to touch when the cutter is taken and placed on the cutter holder by personnel, and the machine is convenient.

Optionally, the swivel mount is equipped with the second shower nozzle, the second shower nozzle is located between the blade holder along swivel mount circumference distribution, the second shower nozzle includes fixed connection's blowout pipe, bulb, the swivel mount is equipped with the ball groove that supplies the bulb installation, establish through bulb, ball groove between second shower nozzle and swivel mount and rotate and be connected, be equipped with the sap cavity in the second shower nozzle, the sap cavity communicates with blowout pipe, runner.

Through adopting above-mentioned technical scheme, the cooling to cutter in the processing has been strengthened in second shower nozzle and the cooperation of first shower nozzle. When the cutter is to be disassembled and assembled, the second spray head is rotated to one side far away from the disassembling and assembling position, so that personnel can have a larger space to operate and disassemble the cutter.

Optionally, the second shower nozzle still includes the clamp plate, the bulb is located between blowout pipe, the clamp plate, be equipped with in the swivel mount and supply clamp plate wobbling activity chamber, the clamp plate can switch the cutter of blowout pipe towards the different positions of swivel mount circumference through the swing, the clamp plate will move about the chamber and separate for two cavities, and two cavities communicate the runner of the different positions of swivel mount circumference respectively, the face of clamp plate is equipped with the import of intercommunication sap cavity, the clamp plate is located import department and is equipped with one-way valve block, one-way valve block makes liquid along activity chamber, import, sap cavity one-way flow.

By adopting the technical scheme, when the cutter on one side of the rotary seat processes a workpiece, the cutting fluid is communicated with the fluid inlet corresponding to the cutter, and is sprayed out from the corresponding first spray head to cool the cutter. Meanwhile, the cutting fluid flows into the movable cavity, the impact force of the cutting fluid drives the pressing plate to swing, the ejection pipe faces to one side of the cutter in a machining state, the cutting fluid simultaneously impacts the one-way valve plate, the inlet at the side is communicated by the one-way valve plate, and the cutting fluid is ejected from the ejection pipe through the fluid cavity to cool the cutter in machining. By the separation effect of the pressure plate on the movable cavity, the cutting fluid cannot enter the flow channel on the other side. In conclusion, the swing of the second spray head can be automatically completed, and the second spray head automatically aims at the cutter in the machining process to spray the cutting fluid. Meanwhile, before the cutter is disassembled and assembled on the cutter holder, the second spray head does not need to be manually rotated.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the angle of the rotary seat is not easy to deflect even if the rotary seat is subjected to counter force and vibration during processing, so that the safety is improved;

2. by arranging the tool apron, a plurality of positions of the workpiece can be processed at the same time, so that the efficiency is improved;

3. the height of the rotary seat can be adjusted, so that the tool apron can be conveniently aligned to the processing position of the workpiece.

Drawings

FIG. 1 is a perspective view of a multi-head power device of a machine tool according to an embodiment.

Fig. 2 is a side view of the first embodiment.

Fig. 3 is an internal view of the swivel base according to the first embodiment, which mainly protrudes the transmission structure of the spindle and the tool holder.

Fig. 4 is a partial view of the first embodiment, mainly illustrating the structure of the flow channel and the first nozzle.

FIG. 5 is a perspective view of the rotary base of the second embodiment.

Fig. 6 is a sectional view taken along line a-a of fig. 5.

Fig. 7 is an enlarged view of fig. 6 at B.

Description of reference numerals: 1. a frame; 2. a base; 21. a turntable; 3. rotating; 4. a tool apron; 11. a third motor; 12. a screw rod; 22. a screw seat; 23. a first motor; 31. a sleeve; 311. a bearing; 32. a brake disc; 24. a hydraulic caliper; 33. a second motor; 34. a main shaft; 341. a drive bevel gear; 41. a driven bevel gear; 35. a flow channel; 351. a liquid inlet; 352. a liquid outlet; 36. a first nozzle; 5. a second nozzle; 51. an ejection pipe; 52. a ball head; 53. pressing a plate; 37. a ball groove; 38. a movable cavity; 54. a liquid chamber; 531. an inlet; 532. a one-way valve plate.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The first embodiment is as follows:

the embodiment of the application discloses a multi-head power device of a machine tool. Referring to fig. 1, the multi-head power device of the machine tool comprises a frame 1 and a base 2 arranged on the side wall of the frame 1 in a sliding mode, wherein the sliding direction of the base 2 is along the vertical direction. The base 2 is provided with a rotary table 21 in a rotating mode, the rotating axis of the rotary table 21 is vertical to the rotating axis, a rotary seat 3 is fixed on the top surface of the rotary table 21, a plurality of tool holders 4 are arranged on the side wall of the rotary seat 3 in a rotating mode, and tools are mounted in the tool holders 4.

Referring to fig. 1 and 2, a third motor 11 is fixed at the top of the frame 1, the third motor 11 is a servo motor capable of rotating forward and backward, an output shaft of the third motor 11 faces downward vertically, a screw rod 12 is rotatably arranged in the frame 1, a rotating axis of the screw rod 12 is parallel to the sliding direction of the base 2, and the screw rod 12 is driven by the third motor 11 to rotate. The side wall of the base 2 is fixed with a screw seat 22, the screw rod 12 penetrates through the screw seat 22 and is in threaded connection with the screw seat 22, the screw rod 12 is driven to rotate when the motor III 11 operates, the screw rod 12 and the screw seat 22 are in threaded connection, the screw seat 22 slides along the length direction of the screw rod 12, and the screw seat 22 drives the whole base 2 to slide along the vertical direction.

The lateral wall bottom of base 2 is fixed with motor 23, and motor 23 also is the servo motor that can just reverse, and carousel 21 is rotated by the drive of motor 23, and the drive mode is: a worm is coaxially fixed on an output shaft of the motor I23, a worm wheel is coaxially fixed at the bottom of the rotary disc 21, the worm is meshed with the worm wheel, and when the motor I23 runs, the rotary disc 21 is driven to rotate through the transmission effect of the worm wheel and the worm. The worm and worm gear drive generates a large reduction ratio, so that the turntable 21 rotates at a low speed, and the turntable 21 drives the rotary seat 3 to rotate together.

The top of swivel mount 3 is fixed with sleeve 31, and sleeve 31 passes base 2's top, and establish through setting up bearing 311 between sleeve 31 outer wall and swivel mount 3 and rotate and be connected, then swivel mount 3's upper and lower both ends all have the rotation to support, make swivel mount 3 rotate stably. A brake disc 32 is fixed on the outer wall of the sleeve 31, and the axis of the brake disc 32 is coincident with the axis of the sleeve 31. The hydraulic caliper 24 is mounted on the top surface of the base 2, the outer edge of the brake disc 32 enters between two clamping blocks of the hydraulic caliper 24, and the hydraulic caliper 24 is driven by a hydraulic system to clamp or release the brake disc 32. When the hydraulic caliper 24 clamps the brake disc 32, the brake disc 32 cannot rotate, and the sleeve 31 and the swivel base 3 cannot rotate; when the hydraulic caliper 24 releases the brake disc 32, the rotary seat 3 can be driven to rotate by the first motor 23.

The second motor 33 is fixed at the top of the sleeve 31, and the second motor 33 is a driving source for driving the tool apron 4 to rotate. The output shaft of the second motor 33 faces downwards vertically, the main shaft 34 is coaxially fixed to the output shaft of the second motor 33, the main shaft 34 is rotatably arranged in the rotary seat 3, and the rotating axes of the second motor 33 and the main shaft 34 are overlapped with the rotating axis of the rotary seat 3. The blade holder 4 is equipped with two sets ofly along the circumference of swivel mount 3, and two sets of blade holders 4 are 90 degrees for the contained angle of blade holder 4 circumference, and every blade holder 4 of group includes three blade holder 4, and three blade holder 4 distributes along vertical direction, distributes along the length direction of main shaft 34 promptly.

Referring to fig. 3, three driving bevel gears 341 are coaxially fixed to the main shaft 34, the height positions of the three driving bevel gears 341 correspond to three tool holders 4 vertically arranged, driven bevel gears 41 are coaxially fixed to the end portions, facing the main shaft 34, of the tool holders 4, the driven bevel gears 41 are meshed with the driving bevel gears 341, and each driving bevel gear 341 is meshed with two driven bevel gears 41 which correspond to the two tool holders 4 circumferentially distributed along the swivel base 3. When the main shaft 34 rotates, all the tool apron 4 synchronously rotate through the meshing action of the driving bevel gear 341 and the driven bevel gear 41, and the tool apron 4 drives the tool to rotate so as to process a workpiece.

Referring to fig. 4, a flow channel 35 is arranged in the swivel mount 3, a liquid inlet 351 and a liquid outlet 352 are arranged on the outer wall of the swivel mount 3 and communicated with the flow channel 35, wherein the liquid inlet 351 is one and located on the top wall of the swivel mount 3, and the liquid outlets 352 are three and respectively close to three tool holders 4 which are vertically distributed. The flow passage 35, the liquid inlet 351 and the liquid outlet 352 are respectively provided with two sets, and the two sets correspond to the two sets of tool holders 4 at two positions of the periphery of the rotating seat 3. The liquid inlet 351 is used for being connected with a liquid pipe, the liquid outlet 352 is provided with first nozzles 36, the three first nozzles 36 correspond to the three tool holders 4 at the same position on the periphery of the rotating base 3 one by one, and the first nozzles 36 are used for spraying and cooling the tools. The first spray heads 36 are not arranged among the tool holders 4 distributed along the circumferential direction of the rotary seat 3.

The implementation principle of a lathe bull power device of this application embodiment does: the heights of the base 2 and the rotary seat 3 can be adjusted through the motor III 11, so that the relative height position of the tool apron 4 and the workpiece is adjusted; the angle of the rotary seat 3 can be adjusted through the first motor 23, and three tool apron 4 which are opposite to the workpiece and longitudinally distributed are switched; after a cutter is arranged in the cutter holder 4, the cutter holder 4 and the cutter are driven to rotate through the second motor 33, and a workpiece is machined in a workpiece moving mode.

After the first motor 23 rotates to complete tool changing, the hydraulic calipers 24 clamp the brake disc 32, so that the rotary seat 3 and the base 2 cannot rotate relatively, the force is far greater than the brake force of the motor, and the rotary seat 3 is not easy to deflect at an angle even if being subjected to counter force and vibration during machining, and the safety is improved.

The cutting fluid is pumped into the fluid inlet 351 by a water pump, and then is sprayed out through the flow passage 35 and the first spray head 36 to cool the cutter in processing. The two liquid inlets 351 are respectively communicated with a discharge port of the water pump, and the cutting fluid is controlled to enter from one liquid inlet 351 by adopting an electromagnetic valve, and the cutting fluid enters the liquid inlet 351 corresponding to the cutter seat 4 in the machining process during specific control; the other liquid inlet 351 is not filled with liquid, and the tool holder 4 and the tool on the side are in an idle state, so that cooling is not needed. After the machine is shut down, because the first nozzle 36 is arranged on only one side of the tool apron 4, the first nozzle 36 is not easily touched when a person takes and places a tool on the tool apron 4, which is more convenient.

Example two:

the second embodiment of the application also discloses a multi-head power device of the machine tool. Referring to fig. 5, the difference between the second embodiment and the first embodiment is: swivel mount 3 is equipped with second shower nozzle 5, and second shower nozzle 5 is located between the blade holder 4 of 3 circumference distributions along the swivel mount, and second shower nozzle 5 has threely, corresponds with three blade holder 4 of vertical distribution respectively.

Referring to fig. 6 and 7, the second nozzle 5 comprises a spraying pipe 51, a ball 52 and a pressing plate 53 which are fixedly connected, wherein the ball 52 is positioned between the spraying pipe 51 and the pressing plate 53, the rotating base 3 is provided with a ball groove 37 for mounting the ball 52, and the second nozzle 5 and the rotating base 3 are rotatably connected through the ball 52 and the ball groove 37. The movable cavity 38 for the pressure plate 53 to swing is arranged in the rotary seat 3, the movable cavity 38 limits the pressure plate 53 to swing only in the horizontal direction, and the pressure plate 53 can switch the cutters at different positions of the circumferential direction of the rotary seat 3 through the swing of the spraying pipe 51. The pressure plate 53 divides the movable cavity 38 into two chambers, the two chambers are respectively communicated with the runners 35 at different circumferential positions of the rotary seat 3, and the side wall of the pressure plate 53 is in sliding seal with the inner wall of the movable cavity 38.

The second nozzle 5 is provided with a liquid chamber 54, the liquid chamber 54 penetrates the ejection pipe 51, the bulb 52 and the pressing plate 53 along the length direction of the second nozzle 5, the plate surface of the pressing plate 53 is provided with an inlet 531 communicating with the liquid chamber 54, and the inlet 531 faces the movable chamber 38. The pressure plate 53 is provided with a one-way valve sheet 532 at the inlet 531, the one-way valve sheet 532 is fixed on the inner wall of the liquid cavity 54 through one end, the one-way valve sheet 532 is a plastic sheet, the elastic force of the one-way valve sheet 532 enables the one-way valve sheet 532 to close the corresponding inlet 531, and the one-way valve sheet 532 enables the liquid to flow along the movable cavity 38, the inlet 531 and the liquid cavity 54 in one direction.

The implementation principle of the second embodiment of the present application is as follows: when the tool on one side of the rotary seat 3 processes a workpiece, the corresponding liquid inlet 351 is communicated with cutting liquid, and the cutting liquid is sprayed out from the corresponding first spray head 36 to cool the tool. Meanwhile, the cutting fluid flows into the movable cavity 38, the impact force of the cutting fluid drives the pressure plate 53 to swing, the spraying pipe 51 faces to the side of the cutter in the machining state, the cutting fluid simultaneously impacts on the one-way valve plate 532, the one-way valve plate 532 is deformed to conduct the inlet 531 at the side, and the cutting fluid is sprayed out of the spraying pipe 51 through the fluid cavity 54 to cool the cutter in the machining state. By the partition action of the pressure plate 53 on the movable chamber 38, the cutting fluid does not enter the flow passage 35 on the other side.

In conclusion, the second nozzle 5 is matched with the first nozzle 36, so that the cooling of the cutter in the machining process is enhanced. And after the rotary seat 3 rotates by an angle for tool changing, the second spray head 5 can automatically swing, and the second spray head 5 automatically aims at a cutter in machining to spray cutting fluid. After the machine is shut down, the second nozzle 5 swings to the tool apron 4 on one side in place, so that the personnel still have a large space to disassemble and assemble the tool on the tool apron 4 on the other side, and the machine is convenient.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a lathe bull power device, includes base (2), rotates and sets up in carousel (21) of base (2), be fixed with swivel mount (3) on carousel (21), be equipped with on base (2) and order about carousel (21) pivoted motor (23), it is provided with blade holder (4) to rotate on swivel mount (3), blade holder (4) are equipped with two at least along the circumference of swivel mount (3), blade holder (4) are used for installing the cutter, its characterized in that: the base (2) is provided with a second motor (33), an output shaft of the second motor (33) is connected with the tool apron (4) and used for driving the tool apron (4) to rotate, the rotary base (3) is fixedly provided with a brake disc (32), the axis of the brake disc (32) is overlapped with the rotation axis of the rotary base (3), and the base (2) is provided with a hydraulic caliper (24) used for clamping the brake disc (32);

a flow channel (35) is arranged in the rotary seat (3), a liquid inlet (351) and a liquid outlet (352) which are communicated with the flow channel (35) are formed in the outer wall of the rotary seat (3), the liquid inlet (351) and the liquid outlet (352) correspond to the tool holders (4) at the same position of the rotary seat (3) in the circumferential direction, first spray heads (36) are arranged at the liquid outlet (352), the first spray heads (36) correspond to the tool holders (4) at the same position of the rotary seat (3) in the circumferential direction one by one, and the first spray heads (36) are used for carrying out spray cooling on a tool;

a first spray head (36) is not arranged between the tool holders (4) which are distributed along the circumferential direction of the rotating seat (3); the rotary seat (3) is provided with a second spray head (5), the second spray head (5) is positioned between the cutter holders (4) distributed along the circumferential direction of the rotary seat (3), the second spray head (5) comprises a spraying pipe (51) and a ball head (52) which are fixedly connected, the rotary seat (3) is provided with a ball groove (37) for mounting the ball head (52), the second spray head (5) and the rotary seat (3) are rotatably connected through the ball head (52) and the ball groove (37), a liquid cavity (54) is arranged in the second spray head (5), and the liquid cavity (54) is communicated with the spraying pipe (51) and the flow channel (35);

second shower nozzle (5) still include clamp plate (53), bulb (52) are located between blowout pipe (51), clamp plate (53), be equipped with in swivel mount (3) and supply clamp plate (53) wobbling activity chamber (38), clamp plate (53) can switch the cutter of blowout pipe (51) towards swivel mount (3) circumference different positions through the swing, clamp plate (53) are separated activity chamber (38) for two cavities, and two cavities communicate runner (35) of swivel mount (3) circumference different positions respectively, the face of clamp plate (53) is equipped with import (531) of intercommunication sap cavity (54), clamp plate (53) are located import (531) and are located to be equipped with check valve piece (532), check valve piece (532) make liquid along activity chamber (38), import (531), sap cavity (54) unidirectional flow.

2. The multi-head power device for the machine tool according to claim 1, wherein: the rotating axis of the second motor (33) is overlapped with that of the rotating seat (3), the second motor (33) and the rotating seat (3) are fixedly connected through a sleeve (31), and an output shaft of the second motor (33) penetrates through the sleeve (31); the outer wall of the sleeve (31) is rotatably connected with the base (2) through a bearing (311).

3. The multi-head power device for the machine tool according to claim 2, wherein: a main shaft (34) is rotatably arranged in the rotary seat (3), the main shaft (34) is driven to rotate by a second motor (33), a driving bevel gear (341) is coaxially fixed on the main shaft (34), a driven bevel gear (41) is coaxially fixed on the tool apron (4), and the driven bevel gear (41) is meshed with the driving bevel gear (341).

4. The multi-head power device for machine tools according to claim 3, characterized in that: the tool apron (4) is provided with a plurality of tool apron bodies along the axial direction of the main shaft (34), the driving bevel gears (341) are also provided with a plurality of tool apron bodies along the axial direction of the main shaft (34), and the driven bevel gears (41) which are positioned at the same axial position of the main shaft (34) are meshed with the driving bevel gears (341) at the axial position of the main shaft (34).

5. The multi-head power device for the machine tool according to claim 1, wherein: still include frame (1), base (2) slide and set up on frame (1), the slip direction of base (2) is parallel with the axis of rotation of swivel mount (3), frame (1) is equipped with motor three (11), by motor three (11) drive pivoted lead screw (12), the axis of rotation of lead screw (12) is parallel with the slip direction of base (2), base (2) are fixed with spiral shell seat (22), lead screw (12) pass spiral shell seat (22) and with spiral shell seat (22) threaded connection.